New derivatives of 1.2.7.8-diphthaloylcarbazole



Patented Nov. 1932 TE -4mm 1 rR'ITzJBAUMANmon LEvERKUsEN-omTfi-E-mnnn GERMANY, ASSIGNQR TO GENERAL NEW YORK, N. Y., A o-onronnmrouon DELAWARE mw mmexmss ,oi? 1.2mamrn'rnnnoxnonnniizonn a, swa Application filed April 17, 192$,Seria1 no. 270,791, and in German July 13, 1926.

The present invention relates to new deriv atives of 1.2.7.8-diphthaloylcarbazole, more particularly to the compounds of the gen- I j eral formula:

and one Y stand for at least one 'X or one n alkoxy group and the remaining Xs' and Y s 15 for hydrogen. v V J In order to manufacture my new dyestufis I prefer to use as starting materials anthrimids of the general formula: v

wherein one X amino groups, Y for an s X 'f wherein one X and one Y stand for benzoylamino groups, at least one alkoxy group and the remaining Xs and Yfs V I for hydrogen, the manufacture of which is S. Patent No.-1",730,186, dated I described in U. October 1, 1929.

,By treating these'anthrimids with concen' l iv I strengtha r conversion occurs whichis easily perceptible by the change' in "color. Probably hydro compounds are with oxidizing agents, suchas manganese dioxide, sodium nitrite or chromic acid, are contrated, sulfuric acidof about 90% water into my new zoles of the above given generalformula p The following examples serve to illustrate my invention without parts being by weight:

mm-Ht Y obtainable for instance by'condensing lben e "zoylamino-4-hydr0xy-5-chloroanthraquinone benzoyl X or one Y for an 'thissolution' injthe' usual 5- Emmpa 2; ,formed which by treatment I verted either directly or after dilution with 7 1.2. 7 .8-diphthaloylcarb'alimiting it-thereto, all.

I 'Emample lilOparts of'thecompound of the probable formula: 1

Naooouir with .1-benzoylamino-t-amin0'anthraquin0ne and'methylating thehydroxy group ofthe anthrimide thus'obtainable by means of tolu-j' ene su'lfonic acid 'methyles'ter, are poured at a temperature'of about G.-- into 200 parts of sulfuric acidof about 90% strength. The temperature rises toabout- 40 C. and'at first the green color copper-red. When pouring the copper-red concentratedsulifuric acid solution into water containing'sodiuni"nitrate, a red-brown 'soluktion isobtained from which cottonis "dyed clear red-brown shades of excellent fastness to light and to washing. The driedand iso i lated dyestuflt, which may be obtained I0I11 manner'has the formula;

ounooHN, NHGOCoHa p l f t Ian li imid' of theformula: l1

ounooHN p v l v V NHOOG5H5 obtainable, for instance," by lc ondensing'l-fben- D0 zoylamino-etf'methoxy 5 -"chloro anth'raquinchanges after a short time to so I one with 1-benzoylamino-5 -aminoanthraquinone are dissolved in 200 parts of the concentrated sulfuric acid (96%) at a temperature of about 20 C. The temperature rises hereby to 35 C. and at first the olive green color in concentrated sulfuric acid changes to red-brown. When after-treated with an oxidizing agent, such as nitro-sulfuric acid and poured into water a yellow-brown dyestuif in the shape of a paste is obtained. It dyes cotton very strong clear yellow-brown shades of 7 excellent fastness to light and to washing. It has the formula: .7

l I lHCOCaH5 NHCOCoH5 Example 3.10 parts of the anthrimid of the formula:

OCHa

OOH

I IHOOCoHB 1 1110000135 (ROHa S 7 /CO I lHCOCGH5 I IHCOC H5 This application is a continuation-in-part application of my copending application, Ser. No.204,119, filed July 7 1927, which has matured into U. S. Patent No. 1,730,186, dated October 1, 1929. V

I claim: 1. As new products the compounds of the general formula:

X Y 7 v O O ID I oo 7 oo 1'; l l wherein one X and one Y stand for benzoylamino groups, at least one X or one Yfor an alkoxy group and the remaining Xs and Ys for hydrogen, dyeing cotton orange to red to red-brown shades of excellent clearness and very good fastness to light and to washing.

2. As new products the compounds of the general formula:

wherein one X represents a ben'zoylaminoi group, the other X hydrogen and Y stands for hydrogen or an alkoxy group, dyeing cotton-orange to red to red-brown shades of excellent clearness and very good fastness to light and to washing.

3. As a new product the compound of the formula v p r 0 on a I 3 0 O :0 C O\ CV0 O 0/ oamconf 1 111000535 forming a rcd-brown powder and dyeing cotton clear red-brown shades of excellent fastness to light and washing.

4. As a new product, the compound of the formula:

OCH i 3 /NH\ o o q c o I J ltncoourrs V 111310006115 forming a yellow-brown powder and dyeing cotton clear yellow-brown shades of excellent fastness tolight and washing.

5. As a new product, the compound of the I formula:

' ooH OCH I 3C V I Q 3 y 9\ l x & oo oo f ne/006E. I IHCOCGHs V forming a red powder and dyeing cotton clear red shades of excellentfastness to light and washing.

In testimony whereof I have hereunto set my hand.- FRITZ BAUMANN.

Certificate of Correction November 1, 1932.

Patent No. 1,885,172.

FRITZ BAUMANN rs in the printed specification of the above- It is hereby certified that error appea follows: Page 1, lines 82 to 88, strike out the numbered patent requiring correction as formula and insert instead- (.)OH3 NH\ o 06 go 0 oo 00 0 11 0 OHN NHOO C H5 vith this correction therein that and that the said Letters Patent should be read w the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of January, A. D. 1933.

M. J. MOORE,

[SEAL] Acting Uommz'ssione'r of Patents. 

